CN101907197B - Valve port opening regulating and setting device of expansion valve and use method thereof - Google Patents
Valve port opening regulating and setting device of expansion valve and use method thereof Download PDFInfo
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- CN101907197B CN101907197B CN201010217087XA CN201010217087A CN101907197B CN 101907197 B CN101907197 B CN 101907197B CN 201010217087X A CN201010217087X A CN 201010217087XA CN 201010217087 A CN201010217087 A CN 201010217087A CN 101907197 B CN101907197 B CN 101907197B
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Abstract
The invention discloses a valve port opening regulating and setting device of an expansion valve, which comprises a lower fixed plate, an upper fixed plate, a movable plate, a guide post, a piston, a spacing bolt, an air spring, a dial indicator, a dial gauge stand, a thimble, and the like. The piston upwards moves under the action of air pressure or hydraulic pressure to drive the movable plate to upwards move, the expansion valve is placed between the thimble and the dial gauge stand for ejection, the air spring ensures that the speed is low in the ejection process so as to be beneficial to reading percent representation numbers, the read number of the dial gauge is observed, and the movement direction of the piston is changed to cause the piston to downwards move while reaching a set value so as to finish the regulation and the setting of the maximum valve port opening of the expansion valve. The invention has the advantages of simple operation and convenient use, the dial gauge ensures that the setting of the valve port opening becomes quite precise, and the air pressure or the hydraulic pressure is adopted as a power source, thereby the labor intensity of workers is reduced, and simultaneously the production efficiency of the expansion valve is greatly improved. The invention is applicable to the production and the assembly of a series of expansion valves and the factory setting of the maximum value of the valve port opening.
Description
Technical field
The present invention relates to a kind of valve port opening adjusting and setting device and method for using thereof of expansion valve.Be specially adapted to the expansion valve that accurately to set the valve port maximum opening.
Background technique
In the air-conditioning system of automobile, form refrigeration cycle.The action fluid machine of being compressed that carries out heat exchange with outer gas is compressed into high temperature and high pressure gaseous refrigerant; Flow to condenser, in condenser, be condensed into liquid state, flow to expansion valve; Become the refrigeration agent of low temperature, low pressure through the section contraction of expansion valve; In the inflow evaporator, absorb the heat in the surrounding atmosphere and flash to gaseous state then, flow in the compressor then.Carry out this circulation repeatedly.The vaporizer and the air in the compartment that are supplied low-temperature refrigerant carry out heat exchange, thereby realize the inner effect of coolant compartment constantly.Expansion valve detects the temperature of the refrigeration agent at evaporator outlet place, comes the size of variable expansion valve aperture thus, thereby control is supplied to the flow of the refrigeration agent of vaporizer, makes it to adapt to the variation of cooling load.If the volume of the cooling medium of inflow evaporator is too much, then exist with liquid state in an evaporator outlet part part, it is compressed after flowing into compressor, very easily causes the damage of compressor valve plate.Therefore often need the valve port maximum opening of expansion valve be limited and set.
Fig. 1 is a kind of structural representation of existing expansion valve.Illustrated expansion valve has brass etc. as the valve body 10 of material and temperature-sensitive with diaphragm apparatus 30.Valve body 10 is provided with: fluid input 12, valve port (valve seat) 13, this valve port and the spool contact separation that is made up of ball 15 and its support member 16; Spring housing 17, it disposes and closes valve spring 25; And fluid output 18; The top of this valve body 10 is provided with the recess 24 that has step simultaneously, and the cross section that is top opening is circular, in this recess 24; Can be free to slide the ground intercalation has the barrier film 33 of discoid movable limit block 27 to state behind the butt, can limit the maximum lift of spool.
Between the spring housing 17 of valve body and outlet 18, be provided with internal whorl, this internal whorl with have the nut 26 of hexagon ring 26a to screw, this nut is used to close the setting load of valve spring 25 to be regulated.Support member 16 has: valve rod 16a, and the end is formed with the sphere acceptance seat of accepting ball 15 above that; Support body 16b, valve rod 16a is pressed into and is fixed among the body 16b, when external force is big, valve rod 16a and support body 16b is moved axially.Support body 16b has lip part 16c, between 16c and adjusting nut 26, is compressed with and closes valve spring 25.
On the other hand, said temperature-sensitive diaphragm apparatus 30 possesses the barrier film 33 of configuration covering recess 24 and the lid member 32 with hemispherical protuberance.The outer circumference end edge part of lid member 32 comes riveted fixing through the caulking part 34 that is located at valve body 10 upper end portions, is formed with solder layer 36 in the upper surface part of covering member 32.Make the solder fusing through heating valve body 10 and lid member 32, form brazing filler metal 36 (upper surface of solder layer 36 becomes the tabular surface of level) thus.Solder layer 36 can stop outside atmosphere and valve body 10 and diaphragm apparatus 30 inner getting in touch.Between lid member 32 and barrier film 33, being formed with confined space is temperature-sensitive chamber (chamber of septum) 35, the indoor end that is inserted with capillary tube 37 of this temperature-sensitive.The other end that is not illustrated of capillary tube 37 is connected with bulb, the temperature of the refrigeration agent that exports out through the bulb sensing evaporator.In temperature-sensitive chamber 35, enclose the gas (like freon) that regulation is arranged in advance, through the pressure that changes with the temperature variation of enclosing gas, make barrier film runout about in the of 33, the action of barrier film 33 is passed to spool through movable limit block 27 and 3 drive links 20.Between barrier film 33 and support member 16, dispose 3 drive links 20,20,20.At length say, between the recess 24 and spring housing 17 of valve body 10, on same circumference, be formed with guide through hole 21, insert 3 drive links 20,20,20 respectively sliding freely with the equal angles compartment of terrain.Give prominence in recess 24 upper end portion of 3 drive links, section and movable limit block 27 butts on it, the lip part 16c upper surface butt of the lower end surface of its 3 drive links and support member 16.
Therefore, if the pressure of temperature-sensitive chamber 35 raises, spool then overcomes the resistance that closes valve spring 25, and barrier film 33 downward runouts press down movable limit block 27 and 3 action rods, and spool is pressed down thereupon, drives valve.The maximum opening of spool obtains limiting through the 24a of the ledge surface portion butt of movable limit block 27 with recess 24.If reduce the pressure of (reduction temperature) temperature-sensitive chamber 35, then close valve spring 25 application of forces action rod and movable limit block 27 are risen, reduce the aperture of spool.
The maximum opening of spool is by the restraint location decision of valve rod 16a and support body 16b.Before the assembling of expansion valve being carried out barrier film and temperature-sensitive chamber (as shown in Figure 2), need set (relative position that is modulating valve rod 16a and support body 16b) to the maximum opening of expansion spool.
Existing method is to utilize by hand to regulate and set, and its manufacturing efficiency is low, and its precision is relatively poor.
Summary of the invention
The valve port opening adjusting and setting device and the method for using thereof that the purpose of this invention is to provide a kind of expansion valve.Not high, the low inferior problem of manufacturing efficiency of precision that can solve artificial pure manual tune and setting and cause.
The valve port opening of expansion valve is regulated with setting device and is comprised bottom plate, piston, guide pillar, lock nut, stay bolt, tightening nut, flange, moving plate, first socket head screw, guide flange, upper mounted plate, nut, jacking block, air spring, sheath, cuts groove, air spring fastening screw trip bolt, second socket head screw, thimble seat, thimble, thimble fastening screw trip bolt, dial gauge, dial gauge gauge stand and gauge stand screw; Bottom plate and operating table welding are fixing, and two guide pillars and bottom plate are fixed, and two guide pillars upper end is fixed with nut and upper mounted plate; Stay bolt is spun on bottom plate through screw thread and passes from the bottom plate lower end, and locking with nut check, and piston passes the through hole at bottom plate center and is connected with flange through screw thread; And locking with tightening nut locking, flange is connected with moving plate through socket head screw, and guide flange is connected with moving plate through socket head screw; Thimble seat is connected with moving plate through socket head screw, is welded with four jacking blocks on the moving plate, and thimble is contained in the hole of thimble seat upper end; There is tapped hole the thimble seat side, and the thimble fastening screw trip bolt cooperates with thimble seat side tapped hole and thimble is fixed on the thimble seat, and four circular holes and four cutting grooves are arranged on the upper mounted plate; Air spring is installed in the upper mounted plate circular hole, and fixes with fastening screw trip bolt and upper mounted plate, is with sheath in the outside of air spring and jacking block; Through hole is arranged in the middle of the percentage gauge stand; The fixing rod of dial gauge is contained in through interference fit in the through hole of gauge stand, and the gauge head of dial gauge stretches out from the gauge stand below, and gauge stand is connected fixing with upper mounted plate through the gauge stand screw.
Described piston is the piston of pneumatic cylinder or the piston of oil hydraulic cylinder.Described gauge stand lower end is provided with the disk of indent.Described thimble is a hollow tubular structures.
The valve port opening of expansion valve is regulated and the method for using of setting device may further comprise the steps:
1) with hand steered valve body of living expansion valve upwards and the lower end surface that makes the circular inner fovea part of valve body withstand the dial gauge gauge stand;
2) switch of manipulating cylinder solenoid directional control valve, to the cavity of resorption air feed of cylinder, piston moves upward fast, and moving plate and thimble also move upward fast;
3) thimble continues to move upward fast, passes in the inner hexagonal hole of thimble from expansion valve.Contacting of the piston of air spring and jacking block prior to the contacting of the lower end surface of the support body in thimble and the expansion valve, the resistance of air spring becomes very slowly the thimble upward speed;
4) thimble continues to move upward at a slow speed, and the thimble upper-end surface contacts with the lower end surface of supporting body, continues motion, and by dial gauge indication displacement;
5) when the registration of dial gauge reaches expansion valve maximum opening setting value; Manipulating cylinder electromagnetic switch threshold switch; Stop the lower chamber of air cylinder air feed and bleed off lower chamber of air cylinder gas, piston and moving plate etc. moves downward under action of gravity, and thimble also and then moves downward; Moving plate moves downward and the stay bolt butt, stops to move downward.
Use the present invention, can set accurately through the registration of dial gauge the detection and the setting of expansion valve maximum opening, and the slow swing of dial gauge pointer can be realized by the resistance of air spring.For adopting the maximum opening value of setting its valve port with all available the present invention of expansion valve of Fig. 2 similar structure.This device is except that air spring and dial gauge need be bought, and remaining parts all can oneself be produced, and is with low cost.Adopt pneumatic or hydraulic pressure as power source; The flow direction of fluid in the cylinder (or oil hydraulic cylinder) is controlled the control of the moving direction that can realize moving plate; These needs can realize to an electromagnetic switch threshold switch that through handling easy to operate, the manufacturing efficiency of expansion valve is higher.
Description of drawings
Fig. 1 is a kind of structural representation of typical auto expansion valve;
Fig. 2 is the assembling schematic representation that is about to carry out the expansion valve that valve port opening sets;
Fig. 3 is the valve port opening adjusting of a kind of expansion valve of the present invention and the schematic perspective view of setting device;
Fig. 4 is valve port opening adjusting and the dial gauge in the setting device and the schematic perspective view of gauge stand of a kind of expansion valve of the present invention;
Fig. 5 is the valve port opening adjusting of a kind of expansion valve of the present invention and the thimble top perspective schematic representation in the setting device;
Among the figure, section 63a, gauge stand screw 64 under bottom plate 41, piston 42, guide pillar 43, lock nut 44, stay bolt 45, tightening nut 46, flange 47, moving plate 48, socket head screw 49, guide flange 50, upper mounted plate 51, nut 52, jacking block 53, air spring 54, sheath 55, cutting groove 56, air spring fastening screw trip bolt 57, socket head screw 58, thimble seat 59, thimble 60, thimble fastening screw trip bolt 61, dial gauge 62, dial gauge gauge head 62a, dial gauge gauge stand 63, the dial gauge gauge stand.
Embodiment
As shown in the figure, the valve port opening of expansion valve regulate with setting device comprise bottom plate 41, piston 42, guide pillar 43, lock nut 44, stay bolt 45, tightening nut 46, flange 47, moving plate 48, first socket head screw 49, guide flange 50, upper mounted plate 51, nut 52, jacking block 53, air spring 54, sheath 55, cut groove 56, air spring fastening screw trip bolt 57, second socket head screw 58, thimble seat 59, thimble 60, thimble fastening screw trip bolt 61, dial gauge 62, dial gauge gauge stand 63 and gauge stand screw 64;
Described piston 42 is the piston of pneumatic cylinder or the piston of oil hydraulic cylinder.Described gauge stand 63 lower ends are provided with the disk of indent.Described thimble 60 is a hollow tubular structures.Gauge stand 63 cooperates with thimble 60 expansion valve is carried out roof pressure.
Need carry out initial setting to the dial gauge position among the present invention before using: as shown in Figure 2, take off movable limit block 27, take out 3 drive links, again movable limit block 27 is reinstalled in the valve body recess 24.Live valve body and make the annulus portion 38 of valve body upper end withstand dial gauge gauge stand seat lower end surface 63a (as shown in Figure 4) with hand steered; Movable limit block 27 its lower end surface under action of gravity in the valve body is connected to the step 24a place of valve body recess at this moment; The gauge head 62a (shown in Figure 4) of dial gauge is withstood at center, movable limit block 27 upper-end surface; The adjustment dial gauge makes that with respect to the upper-lower position of gauge stand the reading of dial gauge is zero, and this has promptly accomplished the setting of dial gauge initial position.This step gets final product only need when using first, setting with a kind of expansion valve.
The valve port opening of expansion valve is regulated and the method for using of setting device may further comprise the steps:
1) with hand steered valve body of living expansion valve upwards and make the circular inner fovea part 38 of valve body withstand the lower end surface 63a of dial gauge gauge stand 63.At this moment, because there are foozle in expansion valve valve body and each part, so the dial gauge reading maybe also possibility be non-vanishing for zero, but this does not influence the operation and the result of back.
2) switch of manipulating cylinder solenoid directional control valve, to the cavity of resorption air feed of cylinder, piston 42 moves upward fast, and moving plate 48 and thimble 60 also move upward fast;
3) thimble 60 continues to move upward fast, and thimble 60 inner hollow-core constructions (shown in Figure 5) can be held the valve rod 16a of expansion valve.Pass among the inner hexagonal hole 26a of thimble from expansion valve.The piston 54a of air spring 54 and jacking block 53 contact contacting prior to the lower end surface of the support body 16b in thimble 60 and the expansion valve; Because the drag effect of four air springs; Make jacking block 53 speed that moves upward reduce greatly, thimble 60 upward speed are become very slowly;
4) thimble 60 continues to move upward at a slow speed, and the thimble upper-end surface contacts with the lower end surface of supporting body 16b.At this moment, because percentage gauge stand 63 is fixed in Shang Dingban, valve body 10 can not move with gauge stand lower end surface 63a butt, and ball 15 and valve rod 16a are against on the valve body and can not move upward.Though support body 16b is fastened on valve rod 16a outside, external force still can make when big relative displacement takes place between them.Thimble 60 withstands support body 16b to be continued to move upward, and support body 16b moves upward with respect to the excellent 16a of valve.Through 3 drive links 20 movable limit block 27 is moved upward, movable limit block 27 upper-end surfaces are withstood dial gauge gauge head 62a and are moved upward, the dial gauge throw of pointer.Continue motion, by dial gauge indication displacement;
5) when the registration of dial gauge 62 reaches expansion valve maximum opening setting value; Manipulating cylinder electromagnetic switch threshold switch; Stop the lower chamber of air cylinder air feed and bleed off lower chamber of air cylinder gas; Piston 42 and moving plate 48 grades move downward under action of gravity, and thimble 60 also and then moves downward, and have promptly accomplished the setting to expansion valve valve port maximum opening value this moment.Moving plate 48 moves downward and stay bolt 45 butts, stops to move downward.
After the production and assembly of accomplishing expansion valve, if when movable limit block 27 moves downward and is against valve body recess step 24a place under the effect of barrier film 33, this moment the valve port opening maximum, and the value that sets for us of its value.
In the present invention, power source also can adopt hydraulic way, and resistance spring can adopt the spring of other form.The structure of other part also can be done multi-form modification and conversion, and therefore any suitable modification and equivalent thereof all should be thought within the scope of the invention.
Claims (5)
1. the valve port opening of an expansion valve is regulated and setting device, it is characterized in that comprising bottom plate (41), piston (42), guide pillar (43), lock nut (44), stay bolt (45), tightening nut (46), flange (47), moving plate (48), first socket head screw (49), guide flange (50), upper mounted plate (51), nut (52), jacking block (53), air spring (54), sheath (55), cutting groove (56), air spring fastening screw trip bolt (57), second socket head screw (58), thimble seat (59), thimble (60), thimble fastening screw trip bolt (61), dial gauge (62), dial gauge gauge stand (63) and gauge stand screw (64); Bottom plate (41) is fixing with the operating table welding; Two guide pillars (43) are fixing with bottom plate (41), and two guide pillars (43) upper end is fixing with nut (52) and upper mounted plate (51), and stay bolt (45) is spun on bottom plate (41) through screw thread and passes from bottom plate (41) lower end; And it is locking with lock nut (44) locking; Piston (42) passes the through hole at bottom plate (41) center and is connected with flange (47) through screw thread, and locking with tightening nut (46) locking, and flange (47) is connected with moving plate (48) through second socket head screw (58); Guide flange (50) is connected with moving plate (48) through first socket head screw (49); Thimble seat (59) is connected with moving plate (48) through second socket head screw (58), is welded with four jacking blocks (53) on the moving plate (48), and thimble (60) is contained in the hole of thimble seat (59) upper end; There is tapped hole thimble seat (59) side; Thimble fastening screw trip bolt (61) cooperates with thimble seat side tapped hole and thimble (60) is fixed on the thimble seat (59), and four circular holes and four cutting grooves (56) are arranged on the upper mounted plate (51), and air spring (54) is installed in upper mounted plate (51) circular hole; And it is fixing with air spring fastening screw trip bolt (57) and upper mounted plate (51); Outside at air spring (54) and jacking block (53) is with sheath (55), in the middle of the dial gauge gauge stand (63) through hole is arranged, and the fixing rod of dial gauge (62) is contained in the through hole of dial gauge gauge stand (63) through interference fit; The gauge head of dial gauge (62) stretches out from dial gauge gauge stand (63) below, and dial gauge gauge stand (63) is connected fixing with upper mounted plate (51) through gauge stand screw (64).
2. the valve port opening of a kind of expansion valve according to claim 1 is regulated and setting device, it is characterized in that the piston of described piston (42) for the piston of pneumatic cylinder or oil hydraulic cylinder.
3. the valve port opening of a kind of expansion valve according to claim 1 is regulated and setting device, it is characterized in that described dial gauge gauge stand (63) lower end is provided with the disk of indent.
4. the valve port opening of a kind of expansion valve according to claim 1 is regulated and setting device, it is characterized in that described thimble (60) is hollow tubular structures.
One kind according to claim 1 the valve port opening of expansion valve regulate the method for using with setting device, it is characterized in that may further comprise the steps:
1) with hand steered valve body of living expansion valve upwards and make the circular inner fovea part of valve body (38) withstand the lower end surface of dial gauge gauge stand (63);
2) switch of manipulating cylinder solenoid directional control valve, to the cavity of resorption air feed of cylinder, piston (42) moves upward fast, and moving plate (48) and thimble (60) also move upward fast;
3) thimble (60) continues to move upward fast; Pass in the inner hexagonal hole (26a) of thimble from expansion valve; Contacting of the piston (54a) of air spring (54) and jacking block (53) prior to the contacting of the lower end surface of the supporting body (16b) in thimble (60) and the expansion valve, the resistance of air spring becomes very slowly thimble (60) upward speed;
4) thimble (60) continues to move upward at a slow speed, and the thimble upper-end surface contacts with the lower end surface of supporting body (16b), continues motion, and by dial gauge indication displacement;
5) when the registration of dial gauge (62) reaches expansion valve maximum opening setting value; Manipulating cylinder electromagnetic switch threshold switch; Stop the lower chamber of air cylinder air feed and bleed off lower chamber of air cylinder gas, piston (42) and moving plate (48) move downward under action of gravity, and thimble also and then moves downward; Moving plate (48) moves downward and stay bolt (45) butt, stops to move downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010217087XA CN101907197B (en) | 2010-07-02 | 2010-07-02 | Valve port opening regulating and setting device of expansion valve and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010217087XA CN101907197B (en) | 2010-07-02 | 2010-07-02 | Valve port opening regulating and setting device of expansion valve and use method thereof |
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| Publication Number | Publication Date |
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| CN101907197A CN101907197A (en) | 2010-12-08 |
| CN101907197B true CN101907197B (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010217087XA Active CN101907197B (en) | 2010-07-02 | 2010-07-02 | Valve port opening regulating and setting device of expansion valve and use method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960910A (en) * | 2015-06-30 | 2015-10-07 | 苏州昌飞自动化设备厂 | Valve element ejection mechanism of automatic valve element assembling machine |
| KR101959377B1 (en) * | 2017-04-24 | 2019-03-19 | 한국과학기술연구원 | Device for supporting sit-to-stand motion |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000310461A (en) * | 1999-04-26 | 2000-11-07 | Denso Corp | Thermostatic refrigerant expansion valve |
| JP2005226940A (en) * | 2004-02-13 | 2005-08-25 | Fuji Koki Corp | Expansion valve |
| CN2791417Y (en) * | 2004-12-14 | 2006-06-28 | 浙江三花制冷集团有限公司 | Opening-regulation structure of thermoexpansion valve |
| DE102009056281A1 (en) * | 2008-12-02 | 2010-09-16 | Denso Corporation, Kariya-City | Expansion valve and method for its production |
| CN201757215U (en) * | 2010-07-02 | 2011-03-09 | 浙江博威汽车空调有限公司 | Expansion valve port opening regulating and setting device |
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| CN101907197A (en) | 2010-12-08 |
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Denomination of invention: Valve opening adjustment and setting device of expansion valve and its application method Effective date of registration: 20221104 Granted publication date: 20120125 Pledgee: Longquan Branch of China Construction Bank Co.,Ltd. Pledgor: ZHEJIANG BOWEI AUTO AIR-CONDITIONER Co.,Ltd. Registration number: Y2022330002912 |
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